Join Date: Feb 2010
Location: Narragansett Bay
Thanked 224 Times in 209 Posts
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Re: Engine over temp at idle
Casey, I've been there and it has always turned out to be the impeller. The first gush of water was probably what was sitting in the exhaust. Pull the impeller and get a new one. It sounds as if you've unintentionally run it dry for a bit now. Clean out the interior housing of the pump with a scotch brite pad and load up the new impeller with glycerin. Overload it! You may also want to insure that your seawater strainer doesn't have an air leak.
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.